This study aims to investigate how the photocatalytic efficiency of zinc oxide can be improved by introducing doping species into its crystal lattice. New materials based on zinc oxide doped with iron, have been synthesized using different methods, characterized and tested toward the abatement of selected organic molecules. The different synthetic strategies followed comprised sol-gel, precipitation and hydrothermal processes, in order to identify which one is capable of guaranteeing the best photocatalytic performances. The photoactivity of the new semiconductors was firstly tested using phenol as a model molecule subjected to irradiation under UV-A light. Phenol abatement is particularly favoured when using ZnO prepared via hydrothermal method and doped with iron at 0.5%. These materials were then tested toward the elimination of ketoprofen, an emerging pollutant substance, from water and real wastewater. Ketoprofen and its transformation products are completely abated within 30 min in pure water or in 1 h in wastewater.

New insight into zinc oxide doped with iron and its exploitation to pollutants abatement

Paganini, Maria Cristina;Gionco, Chiara;Bianco Prevot, Alessandra;Calza, Paola
2018-01-01

Abstract

This study aims to investigate how the photocatalytic efficiency of zinc oxide can be improved by introducing doping species into its crystal lattice. New materials based on zinc oxide doped with iron, have been synthesized using different methods, characterized and tested toward the abatement of selected organic molecules. The different synthetic strategies followed comprised sol-gel, precipitation and hydrothermal processes, in order to identify which one is capable of guaranteeing the best photocatalytic performances. The photoactivity of the new semiconductors was firstly tested using phenol as a model molecule subjected to irradiation under UV-A light. Phenol abatement is particularly favoured when using ZnO prepared via hydrothermal method and doped with iron at 0.5%. These materials were then tested toward the elimination of ketoprofen, an emerging pollutant substance, from water and real wastewater. Ketoprofen and its transformation products are completely abated within 30 min in pure water or in 1 h in wastewater.
2018
Inglese
Esperti anonimi
230
234
5
http://www.sciencedirect.com/science/journal/09205861
Iron doping; Ketoprofen; Pollutant abatement; Zinc oxide; Catalysis; Chemistry (all)
no
1 – prodotto con file in versione Open Access (allegherò il file al passo 6 - Carica)
262
6
Paganini, Maria Cristina; Giorgini, Alice; Gonçalves, Nuno P.F.; Gionco, Chiara; Bianco Prevot, Alessandra; Calza, Paola*
info:eu-repo/semantics/article
open
03-CONTRIBUTO IN RIVISTA::03A-Articolo su Rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1691246
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